Now, you're welcome to go, checkout JBossWS 5.0.0.Beta3 tag and play with it. Or you can simply hack on the latest WildFly master. (also note that WildFly 9 Beta1 is being released very soon!)
Alternatively, you could also play with another recent WS release, the 1.1.0.Beta1 version of the our jaxws-codefirst Maven Archetype, which has just been moved to rely on JBossWS 5 Beta artifacts. You can read about it in a previous post of mine, but it basically boils down to simply using the following command line to kick start a WS project in few seconds: